"Richard M Willis" wrote in message
om...

Do the USAns have filter arrows, or is it a Europe-specific thing ?

Not usually, but they often have arrows above the lanes which are supposed
to go that way.

Aside: does anyone know why some traffic signals here show a
green filter arrow *AND* a solid green light simultaneoulsy,
given that the latter allows a superset of the filtered traffic
to "go". ?

The green arrow shows that it is safe to turn as the oncoming traffic has
been stopped by a red light.
--
Terry Harper, Web Co-ordinator, The Omnibus Society
75th Anniversary 2004, see http://www.omnibussoc.org/75th.htm
E-mail:
URL: http://www.terry.harper.btinternet.co.uk/